Diagnostic charging cradle and methods of using the same

ABSTRACT

A device and method for charging and testing an animal stimulus receiver is provided herein.

This application is a continuation of U.S. patent application Ser. No.14/478,607 filed Sep. 5, 2014, now U.S. Pat. No. 9,520,728, the entiredisclosure of which is incorporated by reference herein.

FIELD OF THE INVENTION

The present invention relates generally to devices and methods forcharging and testing receivers and more particularly, but notexclusively, to devices and methods for charging and testing animalstimulus receivers.

BACKGROUND OF THE INVENTION

Animal movements are commonly controlled through the application of acorrective stimulus. For example, a receiver may be attached to ananimal that is designed to produce a stimulus at the animal to correctthe animal's movement or behavior upon the reception of a signal. Mostreceivers that are designed to apply corrective stimuli are wireless andrely on battery power for their operation. Accordingly, the batteries ofsuch receivers require intermittent charging to maintain receiveroperation.

However, in addition to battery charging, receivers that apply stimulito animals must be tested to confirm their operation and that suchreceivers will continue to produce stimuli upon the reception of asignal. Because these receivers respond to a magnetic field with aunique signature and deliver a painful shock, users do not want to testthe operation of the receiver on themselves. In current productsthroughout the industry, consumers simply replace or recharge a battery,place the receiver back on the animal and assume it is working.

Therefore, a need exists in the field for a charging station or cradlethat both charges and tests the receiver to confirm the receiver'ssatisfactory operation.

SUMMARY OF THE INVENTION

A charger of the invention, which may be a cradle, may ensure that ananimal stimulus receiver is fully operational. In one aspect, thepresent invention includes a cradle for charging and testing an animalstimulus receiver. The animal stimulus receiver may include a stimulusgenerator that may deliver a stimulus to an animal. The cradle of theinvention may include a power supply connector, which may communicatewith a power supply. The cradle may also include charging circuitry thatmay be in communication with the power supply connector that may also beconfigured to apply a charging voltage to the animal stimulus receiver.Additionally, the cradle may include stimulus detection circuitryconfigured to receive a stimulus from the animal stimulus receiver anddetermine a stimulus status of the animal stimulus receiver.

In an animal stimulus receiver, such as a dog collar receiver, thatincorporates a rechargeable battery, charging may be accomplished usingtwo connection points to the receiver. A ground connection may besupplied by one of the two correction probes or prongs. The foregoingprobes normally deliver the stimulus (e.g., shock stimulus) to theanimal. One of the probes is connected to the internal battery groundterminal, which is also the primary ground connection for all of theinternal circuitry in the collar.

The other connection for charging may be made via a round pin that exitsthe side of the receiver case. This pin supplies an electricalconnection to the internal charge controller circuitry, which handlesthe charging of the battery. To charge the receiver, about 5 volts maybe applied to the pin while ground connection is made to the appropriateprobe.

The receiver may incorporate a charging output indicator—a green LED maylight up to indicate that charging is taking place. For example, maximumcharge current may be about 150 mA and the green LED terminates when thebattery charge current has dropped to about 25 mA.

A cradle of the invention may produce a selected magnetic field for thereceiver to respond, then verifies that a stimulus (e.g., shockstimulus) was produced utilizing a voltage measuring circuit. Thevoltage measuring circuit applies a load across both of the correctionprobes at the animal stimulus receiver (indicative of the loadencountered by the application of animal flesh), then measures viaaveraging the voltage produced across this load while the animalstimulus receiver is correcting the animal. A level detection circuitmay determine if the stimulus level is sufficient for normal operation,and an indication of this is given to the consumer.

In addition, the cradle of the invention may monitor battery charging,and may provide an indication when charging is complete.

The cradle of the invention may also include additional detectors thatdetect and report failures of the animal stimulus receiver. A commonfailure mode of animal stimulus receivers (e.g., animal receivercollars) is the intrusion of water, which causes corrosion. Corrosioncontributes to higher than normal current draw and may eventuallyprevent operation of the unit. If the receiver has significant corrosionfrom water, the enhanced cradle will never detect a charge completecondition and will notify the consumer of the defective receiver. Chargetermination may be determined when the charge current drops below areference value (e.g., about 1 mA). Normal receiver operation may beabout 200 μA. When water is present, the operating animal stimulusreceiver current may exceed 1 mA. The animal stimulus receiver may stilloperate, though with a limited battery life due to the presence ofcorrosion.

Another failure mode of the animal stimulus receiver may pertain to theelectrical connections made inside the receiver to the correctionprobes. Attached to the correction probes is a pulse transformer forgenerating high voltages. Typical resistance of the secondary winding ofthe pulse transformer is on the order of 1 kΩ. If the pulse transformerwires disconnect or break from the probes, then the voltage will arc tothe probes, diminishing energy delivery to the animal.

The cradle of the invention may utilize the secondary impedance of thepulse transformer to power up. A voltage supply circuit comprised of aP-channel semiconductor device (e.g., MOSFET, bipolar) may search forthe probes on the receiver collar to supply a ground path to bias on thevoltage supply circuit. Indeed, one of the probes of the animal stimulusreceiver may function as a common ground upon engagement with thecradle.

The cradle of the invention may produce an actuator signal for theanimal stimulus receiver. In order to draw a selected stimulus from thereceiver, both the signature and amplitude of the actuation signal maybe matched to the signal designated or indicated to produce the selectedstimulus. This actuation followed by production of the stimulusdemonstrates that the receiver is responding to the appropriate signalat the appropriate level. Defects in the animal stimulus receiver (e.g.,corrosion, damaged component, failed component) can cause the receiverto become less sensitive to the actuation signal, endangering the animalby causing a decrease in the distance the receiver activates from aperimeter boundary. Moreover, the animal stimulus receiver may fail toproduce a selected stimulus (e.g., shock stimulus) if the antenna,amplifier, and/or detection circuitry in the receiver is compromisedwhen the cradle produces the selected signal at the appropriateamplitude and signature.

Additionally, a further embodiment of the cradle of the invention mayinclude detection of an auditory or vibrational stimulus produced by theanimal stimulus receiver upon reception of a selected actuation signal.For example, the cradle of the invention may detect an audible beep orvibration produced by the receiver. In the case of an auditory stimulus,detection may be accomplished through the use of a microphone, and aband-pass amplifier arrangement to only “listen” to the tones producedby the receiver. Output of the amplifier may pass through a detector andthen averaged to check for correct amplitude. Regarding vibrationalstimuli detection, the cradle may include a motion detector.

In another aspect, the invention includes a method for charging andtesting an animal stimulus receiver with a charger or cradle havingcharging circuitry and stimulus detection circuitry. The method mayinclude activating at least one of the charging circuitry and stimulusdetection circuitry. The method may also include applying an actuationsignal to the animal stimulus receiver, where the actuation signal maybe selected to cause the animal stimulus receiver to generate a selectedstimulus at the stimulus detection circuitry. Moreover, the method mayinclude detecting whether the selected stimulus was generated at thestimulus detection circuitry. Additionally, the method may includecharging a battery of the animal stimulus receiver with the chargingcircuitry for a selected period of time.

In an exemplary method of the invention, an animal stimulus receiver maybe inserted into a cradle of the invention. Connection to receiverprongs by cradle contact springs may activate the cradle electronics.The cradle may then delay about 1.5 seconds for the power supply tostabilize. As an initial test, the charging circuitry may be disabled.During the initial test, green and red LEDs may alternatively flash toindicate a test is taking place. The cradle may then provide a varietyof actuation signals to the animal stimulus receiver by modulating thecarrier frequency and signature of such actuation signals. Eachactuation signal may be produced for several seconds, and the output ofthe stimulus detection circuitry may be monitored for a response. If thecradle receives a response from the stimulus detection circuitry, it maythen blink green and enter the charging state. However, if the cradledoes not receive a response from the stimulus detection circuitry afterall permutations have been attempted, the cradle may blink red and enterthe charging state. At this point, the animal stimulus receiver may bedefective, or its battery may be compromised or dead.

During the charging state, the cradle may monitor the output of a highside current monitor to keep track of the level of charge current thebattery is accepting. The cradle may then poll the current monitor onceper minute. Termination of charge may occur when the charge monitorreports a current draw below about 1 mA or if about 4 hours haveelapsed. If the battery does not charge within about 4 hours, the cradlemay illuminate a solid red LED to indicate the animal stimulus receiveris faulty. When the charge monitor reports that the charge is complete,the cradle may do one of two things depending on whether or not itreceived a stimulus response in the initial test. If the cradle receiveda stimulus response in the initial test, it may simply illuminate asolid green LED to indicate that the receiver is good and charge iscomplete.

However, if a stimulus response was not received in the initial test,the cradle may once again produce all permutations of the actuationsignal and may again monitor the stimulus detection circuitry for aresponse. If a stimulus response is now received, the cradle mayilluminate a solid green LED to indicate the receiver is good andcharging has completed. If a stimulus response is not received, thecradle may illuminate a solid red LED to indicate the receiver isdefective. When the animal stimulus receiver is removed from the cradle,the cradle may power down.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing summary and the following detailed description of theexemplary embodiments of the present invention may be further understoodwhen read in conjunction with the appended drawings, in which:

FIG. 1 schematically illustrates a front view of an exemplary charger ofthe invention.

FIG. 2 schematically illustrates a rear view of the exemplary charger ofthe invention.

FIG. 3 schematically illustrates an animal stimulus receiver that may beused in conjunction with the exemplary cradle of the invention.

FIG. 4 schematically illustrates the animal stimulus receiver engagedwith the exemplary charger of the invention.

FIG. 5 diagrammatically illustrates components of the exemplary chargerof the invention.

FIG. 6 illustrates a circuit diagram that includes exemplary voltagesupply circuitry and shock detection circuitry.

FIG. 7 illustrates a circuit diagram that includes exemplary chargingcircuitry.

FIG. 8 illustrates a circuit diagram that includes an exemplary controlprocessor, a receiver stimulus actuator, an output indicator, a powerjack, unused pins of the control processor tied to ground, and test padsused for programming the control processor.

FIG. 9 illustrates a method of the invention that includes both chargingand testing an animal stimulus receiver.

FIGS. 10A and 10B illustrate an exemplary method of the invention thatprovides seven different actuation signals at an animal stimulusreceiver and charges the animal stimulus receiver.

DETAILED DESCRIPTION OF THE INVENTION

Referring now to the figures, wherein like elements are numbered alikethroughout, FIGS. 1 and 2 illustrate front and rear views, respectively,of an exemplary charger or cradle 100.

Cradle 100 is provided for charging and testing an animal stimulusreceiver, such as the animal stimulus receiver 200 depicted in FIG. 3.Specifically, the cradle 100 may charge a battery of the animal stimulusreceiver 200 and test the stimulus circuitry of the animal stimulusreceiver 200. The stimulus circuitry being tested includes a stimulusgenerator that may deliver a stimulus to an animal upon the reception ofa selected actuation signal. Ordinarily, the user of the animal stimulusreceiver, such as the one depicted in FIG. 3, may be required to eitherpresume the continued functionality and operability of the receiver ortest the animal stimulus receiver on his or her self. Rather thansubject a user to the uncertainty of the receiver's continuedoperability, the cradle 100 of the invention may engage with an animalstimulus receiver 200 to both charge the receiver and apply a variety ofselected actuation signals to determine the receiver's continuedfunctionality and operability.

Turning to the components of the device of the invention in FIGS. 1 and2, the cradle 100 may include an engagement passage 130. The engagementpassage 130 allows for seating and support of the animal stimulusreceiver 200 at the cradle 100. Moreover, the passage 130 may aid inaligning certain components of the animal stimulus receiver 200 withcorresponding contact points on the cradle 100. The cradle 100 mayfurther include several contacts that facilitate connections withcircuitry on board the cradle 100. For example, as depicted in FIG. 1,the cradle 100 may include external contacts 110 and 120 that may allowfor reception of protrusions or a boss of the animal stimulus receiver200. Moreover, external contacts 110 and 120 may include a conductiveportion that allows for communication between the circuitry of thecradle 100 and animal stimulus receiver 200. Specifically, externalcontacts 110 and 120 may allow for electrical communication between thestimulus detection circuitry of the cradle 100 and a stimulus generatorof the animal stimulus receiver 200. Additionally, cradle 100 mayinclude a charging contact 160 that may be disposed within a chargingcontact channel 150. The channel 150 may be a groove or cut out from theengagement passage 130 provided that it may accommodate the chargingcontact 160 and facilitate engagement between the charging contact 160and a boss of the animal stimulus receiver 200.

In an additional embodiment, the engagement passage 130 may include anengagement latch 140 that secures the animal stimulus receiver 200within the passage 130 and prevents substantial movement of the receiver200 within the passage 130. By preventing movement of the receiver 200,the engagement latch 140 may prevent loss of contact or communicationbetween a contact of the cradle 100 and the animal stimulus receiver200.

Additionally, the cradle 100 may include an output indicator 190 thatmay be disposed on the body or surface of the cradle 100. For example,the indicator 190 may include one or more LEDs that allow for thedisplay and communication of device information to a user. In certainaspects, the output indicator 190 may include green and/or red LEDs thatmay be used to display and communicate device information to a user.Moreover, the cradle 100 may include one or more mounting eyes 170 toallow for placement of the cradle 100 on a surface, such as a wall.

Cradle 100 may also include one or more ports (not shown in figures) ona surface of the cradle 100 within or at a power supply channel 180. Thepower supply channel 180 may allow for a power supply connector 181 tobe placed in electrical communication with the circuitry of the cradle100 via a port at the cradle 100. The power supply connector 181 mayconnect to a jack of the circuitry of the cradle 100 and may furtherconnect to a power supply so that a voltage may be applied to thecircuitry of the cradle 100 upon activation of such circuitry. Incertain embodiments, the power supply connector 181 may communicateabout 0.1 to 100 volts to the circuitry of the cradle 100. In otherembodiments, the power supply connector 181 may communicate about 1 to10 volts to the circuitry of the cradle 100. The power supply connector181 may also communicate about 5 volts to the circuitry of the cradle100.

Regarding engagement between the cradle 100 and the animal stimulusreceiver 200, the exemplary animal stimulus receiver 200 in FIG. 3 mayhave a receiver electronics housing 210 that encloses a stimulusgenerator, a stimulus receiver, and one or more batteries that providepower to the stimulus receiver and the stimulus generator. The animalstimulus receiver 200 may further include stimulus probes or prongs 240and 250, which are connected to the stimulus generator of the animalstimulus receiver 200. Additionally, the animal stimulus receiver 200may include a charging boss 260, which is connected with one or morebatteries of the animal stimulus receiver 200. During operation, theanimal stimulus receiver 200 may receive an actuation signal at thestimulus receiver that is selected to produce a specific stimulus.Stimuli that may be used in accordance with the invention may includeshock stimuli, vibration stimuli, and/or auditory stimuli. For example,where an animal stimulus receiver (such as animal stimulus receiver 200)is designed to provide a shock stimulus, the stimulus receiver willfirst receive a shock stimulus actuation signal from a transmitter. Whenthe animal stimulus receiver 200 is functionally normally, a voltagewill then be applied across the stimulus prongs 240 and 250 by thestimulus generator, thereby correcting an animal's behaviour through theapplication of a painful shock at the stimulus prongs 240 and 250.

As shown in FIG. 3, a portion of the stimulus prongs 240 and 250 mayexit the receiver electronics housing 210 and pass through a collar 220.A positioning bracket 230 may be disposed against the collar 220 withreceiver contact bosses 241 and 251 placed at the base of stimulusprongs 240 and 250. Stimulus prongs 240 and 250 may be completely rigidand each composed of a fixed length of conductive material (e.g.,metal). However, the stimulus prongs 240 and 250 may include both fixedstimulus portions 242 and 252 and retractable stimulus portions 243 and253 that may retract when opposed by a force. Indeed, retractablestimulus portions 243 and 253 may retract when placed against ananimal's flesh when the animal stimulus receiver 200 is placed at theanimal in the form of a collar.

Referring now to FIG. 4, when the animal stimulus receiver 200 isengaged with the cradle 100 for charging and testing, then animalstimulus receiver 200 may be placed in the engagement passage 130. Incertain aspects, the charging boss 260 may align with, and contact, thecharging contact 160. Furthermore, upon engagement, the stimulus prongs240 and 250 may pass through external contacts 110 and 120 and aconductive portion of each of external contacts 110 and 120 may contacta surface of each of stimulus prongs 240 and 250. The receiver contactbosses 241 and 251 may be provided to contact the conductive portions ofexternal contacts 110 and 120, respectively. Upon seating and engagementof the animal stimulus receiver 200 at the cradle 100, the externalcontacts 110 and 120 may be in electrical communication with thestimulus generator of the animal stimulus receiver 200 through receivercontact bosses 241 and 251. And furthermore, the charging contact 160may be in electrical communication with one or more batteries of theanimal stimulus receiver 200 through the charging boss 260.

After engagement of the animal stimulus receiver 200 with the cradle100, when the cradle is powered by a power source through, for example,power supply connector 181, the engagement will activate the circuitryof the cradle 100 and begin a process of charging one or more batteriesand/or testing the stimulus generator of the animal stimulus receiver200.

Referring now to FIG. 5, cradle 100 may include a variety of componentsthat allow both for charging one or more batteries and testing thestimulus generator of the animal stimulus receiver 200. The circuitry ofthe cradle 100 is connected to the cradle contacts 110, 120, and 160,described above. At least one of the external contacts 110 and 120 mayfunction as a permanent ground.

The cradle 100 may include shock detection circuitry 650 that may beconnected to the animal stimulus receiver 200 through external contacts110 and 120. The shock detection circuitry 650 may receive the shockproduced by the animal stimulus receiver 200 and determine if any shockwas produced and, moreover, if the shock produced was expected basedupon the stimulus actuation signal provided to animal stimulus receiver200. The shock detection circuitry 650 may include level detectioncircuitry that may determine whether the shock stimulus producedincludes a level of shock indicative of normal operation of the animalstimulus receiver 200. Furthermore, the shock detection circuitry 650may also include voltage measuring circuitry that may verify that theshock stimulus was produced. The voltage measuring circuitry may alsoprovide a load to the external contacts 110 and 120 that is indicativeof the load provided by animal flesh.

The cradle 100 may further include a control processor or circuitry 800that may be connected with the shock detection circuitry 650. Thecontrol processor 800 may include microprocessor U1. The cradle 100 mayfurther include a receiver stimulus actuator 830, an output indicator860, an auditory stimulus detector 870, a vibratory stimulus detector875, an animal stimulus receiver fault detector 880, control processortest pads 890, or a combination thereof. Each of the receiver stimulusactuator 830, output indicator 860, auditory stimulus detector 870,animal stimulus receiver fault detector 880, control processor test pads890, or a combination thereof, may be connected to the control processor800 as illustrated in FIG. 5.

The control circuitry 800 may further include a non-transitory storagemedium that may store data, a computer readable program, and/or othercode that may be read by a computer or processor. Storage media mayinclude, for example, floppy disks and diskettes, compact disk (CD)-ROMs(whether or not writeable), DVD digital disks, RAM and ROM memories,computer hard drives and back-up drives, external hard drives, “thumb”drives, and any other storage medium readable by a computer.

The control circuitry 800 may monitor the shock detection circuitry 650and determine if a shock has been detected at the shock detectioncircuitry 650 by the animal stimulus receiver 200. The control circuitry800 may, through the receiver stimulus actuator 830, provide a stimulusactuation signal to the stimulus receiver of the animal stimulusreceiver 200. Specifically, the receiver stimulus actuator 830 mayprovide an actuation signal that activates the stimulus generator of theanimal stimulus receiver 200 and thereby causes the animal stimulusreceiver 200 to generate a stimulus through stimulus prongs 240 and 250.

The stimulus actuation signal may be adjusted and/or selected to producea selected stimulus by the stimulus generator at the animal stimulusreceiver 200. The receiver stimulus actuator 830 may include atransmitter and may, in certain aspects, include an antenna. As usedherein, the term “antenna,” may include, but is not limited to, ametallic or conductive device (such as a wire) for transmitting and/orreceiving radio waves and/or generating magnetic fields.

The control circuitry 800 may be connected with an output indicator 860that may display or otherwise indicate an output produced by the controlprocessor 800. The output indicator 860 may include, for example, an LCDdisplay, one or more LEDs, or a combination thereof. In certain aspects,the output indicator 860 may display at least one of the battery chargestatus, stimulus status, and fault status. More specifically, suchoutput may be indicative of a battery charge status, a fault status asdetected by the animal stimulus receiver fault detector 880, or thestimulus status of the animal stimulus receiver 200 as may be detectedat the shock stimulus circuitry 650, auditory stimulus detector 870,and/or vibratory stimulus detector 875.

The fault status detected by the animal stimulus receiver fault detector880 may be, for example, a short circuit fault status, a wire corrosionfault status, or a combination thereof. The battery charge status maybe, for example, a charge in process status, a battery fault status, abattery charge complete status, or a combination thereof. The stimulusstatus may be, for example, a correct stimulus produced status, anincorrect stimulus produced status, a non-production of stimulus status,or a combination thereof.

The control circuitry 800 may also include controller processor testpads 890 that allow a user to configure a function of the controlprocessor 800 or otherwise interact with the control circuitry 800. Asshown in FIG. 8, the control circuitry 800 may also include one or moreunused pins 893, which may be connected to additional detectors,receivers, transceivers, or transmitters. However, the one or moreunused pins 893 of the invention may, in certain aspects, be tied to aground.

The circuitry of the cradle 100 may further include charging circuitry700 that may charge one or more batteries of the animal control receiver200 through, for example, cradle contacts 120 and 160 (i.e., externalcontact 120 and charging contact 160). The charging circuitry 700 may beconnected with the control circuitry 800 and provide a charge status tothe control circuitry 800. The charging circuitry 700 may detect thelevel of charge at one or more batteries of animal stimulus receiver 200and may then provide a voltage and current to the one or more batterieswhen such batteries are below a selected threshold of charge. Moreover,when one or more batteries of the animal stimulus receiver 200 are abovea selected threshold of charge, the charging circuitry may detect thatthe selected threshold has been met or exceeded and may terminatecharging of the batteries.

Additionally, the charging circuitry 700 may detect when one or morebatteries of the animal stimulus receiver 200 are faulty because suchbatteries will not become fully charged. As described herein, a batterymay be faulty when it is incapable of being fully charged in about fourhours. For example, the charging circuitry 700 detects a faulty batteryat the animal stimulus receiver 200, charging of the battery will ceaseand the output indicator 860 will indicate such information to the user.

The cradle 100 may further include a voltage supply circuit 600 that mayallow the control circuitry 800 to draw power from a power jack 895through the power supply connector 181. The power supply connector 181may be connected to a power source such as, for example, an electricalpower source, a battery power source, or any other source of power thatmay be used to provide a DC or AC voltage (subject to conversion) to thecradle 100. The term “battery,” as used herein, may refer to anelectro-chemical device comprising one or more electro-chemical cellsand/or fuel cells, and so a battery may include a single cell or pluralcells, whether as individual units or as a packaged unit. A battery isone example of a type of an electrical power source suitable for aportable device.

Engaging the animal stimulus receiver 100 with the cradle 200 closes thecircuit and provides a ground through external contact 120, therebyproviding power to the control processor 800 and activating the chargingcircuitry 700 and stimulus detection circuitry (e.g., shock detectioncircuitry 650). Thus, the voltage supply circuit 600 may allow thecontrol processor 800 to draw power from a power source. Additionally,the voltage supply circuit 600 may also include a shock protector orvoltage clamp that protects the control processor 800 from receiving ashock stimulus voltage from the animal stimulus receiver 200 duringtesting.

Referring to a particular embodiment more specifically, the circuitry ofthe charge unit 100 is provided in FIGS. 6-8. As shown therein, thecharge unit 100 includes internal circuitry enclosed within the housingto operate the charger and perform selected functions such as chargingthe battery of an animal collar and testing selected functionality ofthe animal collar such as the application of an animal stimulus, such asa shock generated at the probes of the animal collar, when the collar ismounted on the charger. As shown in FIG. 8, the charger 100 includespower a connection port 895 in the form of an external jack J1 forelectrical connection with an AC to DC converter that plugs into a walloutlet to supply a 5V DC power source to the charger circuitry. The jackJ1 of the charger is connected between ground and such 5V power sourceto provide the 5V source to the operational circuitry of the charger.

Referring to FIG. 8, the charger 100 includes controller circuitry 800for controlling operation of the charger circuitry. In this regard, thecontroller circuitry 800 may include a processor such as processor U1 tomonitor and control operation of the charger circuitry and forcontrolling the indication of certain outputs. For example, processor U1may function to monitor the production of an animal stimulus from theanimal collar in response to an actuator signal enabled by the processorU1 to ascertain whether the production of an animal stimulus isoperating properly or as desired. Processor U1 may function to monitoran output of stimulus detection circuitry 650 shown in FIG. 6, such asthe SHOCK signal from the stimulus detector circuitry 650, to detect,for example, that the generation of a desired shock has been effected bythe animal collar in response to an activation signal produced by theprocessor U1 at the SIGNAL line shown in FIG. 8. For this purpose, thecontroller circuitry 800 is also connected with receiver stimulusactuator circuitry 830 so that the processor U1 may cause the receiverstimulus actuator circuitry 830 to produce the appropriate activationsignal, such as an appropriate electro-magnetic signal, on an internalloop 833 comprised of a PCB trace which runs the periphery of theperiphery circuit board and functions as an antenna to transmit theactuation signal to the animal receiver mounted on the charger 100 withthe shock probes of the animal receiver in electrical connection withPads A and B as shown in FIG. 6 in order to actuate the shock circuitryof the animal receiver connected at the cradle of the charging unit. Asshown in FIG. 8, the processor U1 is connected with the stimulusactuation circuitry 830 by the SIGNAL line so that the processor cansend an activation SIGNAL on the SIGNAL line to cause a desired stimulusactivation signal to be produced at the PCB trace 833 to activate thedog collar to produce a stimulus that can be detected by the stimulusdetection circuitry 650 connected with Pad A as shown in FIG. 6 which,in response, produces an output signal SHOCK that is monitored by theprocessor U1 to verify whether a desired shock stimulus was produced bythe animal collar if the expected stimulus is not generated in responseto the activation signal, the SHOCK line will not produce an indicationof shock. Optionally, the processor U1 may run through a series ofdifferent activation signals in an attempt to generate a shock. In anyevent, if a shock is not generated by the one or optionally moreactivation signals, the processor U1 can determine that the stimulus ofthe animal collar may not be functioning properly. As such U1 functionsto monitor a correction or shock stimulus through stimulus detectioncircuitry 650.

The processor U1 may also function to monitor and control a chargecontrol circuit 700, as shown in FIG. 7, that functions to supply andmonitor the charge current to the animal receiver through Pad C. First,the processor U1 may function to monitor the output of the chargecontrol circuitry 700 at the CHARGE line through current monitorcircuitry 720 connected between the 5V source and Pad C which functionsto monitor the flow of charge current from the 5V source to Pad C andproduces an output at the CHARGE line reflective of the flow or suchcharge current. For this purpose, processor U1 may monitor to the outputof the current monitor circuitry 720 at the CHARGE LINE as input to theCHARGE PIN of processor U1 to enable processor U1 to monitor whether thebattery of the dog collar is or has been properly charged. Secondly, theprocessor U1 may optionally provide an output at the CHARGE pin of theprocessor U1 for supply to switch circuitry 730 connected between the 5Vand Pad C in order to switch the supply of charge current to the animalreceiver on and off. The processor U1 may also function to turn on andoff output indicators, such as output indicator 860 which may beprovided in the form of LEDs such as a green LED D11 and/or a red LEDD12. In this regard, the processor U1 may function to illuminate theLEDs as desired, for example, by selectively switching the LEDs on andoff, for example, to enable a solid green LED or a blinking green LEDand/or a solid red LED or a blinking red LED.

As shown in FIG. 8, the processor U1 is a 20 pin processor. Not all pinsmay be needed, and as shown in the embodiment of FIG. 8, pins 2, 5, 7, 8and 11-16 are not used. Pin 1 is connected to the VCC line of the supplyvoltage switch circuit 600 to monitor whether switch circuit 600 hasswitched supply voltage VCC on and off (shown in FIGS. 6 and 8.) Pin 3is connected through resistor R18 to the gate of switching MOSFETtransistor Q7 to turn green LED D11 on and off. For example, the greenLED can be caused to blink when the battery of the animal receiver ischarging and/or the green LED D1 may be caused to emit solid green whenthe animal receiver has been fully charged and the stimulus applied bythe animal receiver, such as the shock generation, has been detected ordetermined to work properly. The gate of the transistor Q7 is alsoconnected to ground via resistor R30. The source of the transistor Q7 isconnected to ground. The drain of Q7 is connected to the 5V sourcethough resistor R32 and the green LED D11. When the switching transistorQ7 is turned on by the signal from Pin 3 of U1 the green LED willilluminate and when the transistor Q7 is turned off by U1 the LED 11will not illuminate. For example, the green LED may illuminate solidwhen the battery of the collar has been fully charged and a desiredshock has been detected in response to an actuation signal effected bythe processor. Alternatively, the green LED may be switched on and offto blink to indicate the battery of the collar is being charged.Similarly, Pin 17 of the processor U1 is connected to the gate of aMOSFET switching transistor Q8 through resistor R29. The gate of thetransistor Q8 is also connected to ground through resistor R31. Thesource of switching transistor Q8 is also connected to ground. The 5Vsource is connected through resistor R33 and the red LED D12 to thedrain of Q8. Accordingly, when the processor U1 turns the switchingtransistor Q8 on by a signal at Pin 17 the red LED will illuminate andwhen processor U1 turns off the transistor Q8 the red LED D12 will notilluminate. The red LED for example, may illuminate solid if the batteryof the animal receiver cannot sustain a charge. The red LED D12 mayblink red through on and off signals from Pin 17 if the battery cansustain a charge but the actuation of a stimulus such as the shockcannot be detected.

The controller circuitry 800 also includes test pad circuitry 890 thatincludes a test pad T2 used in the programming and monitoring of theprocessor U1. The test pad T2 includes an ICSPDATA line pad that isconnectable with Pin 19 of processor U1 to provide data. Test pad T2also includes an ICSPCLK line pad to communicate clock signals with Pin18 of processor U1. The Test Pad T2 also includes a VPP line padconnected with the input Pin 4 of processor U1 to provide a voltageprogramming pulse to enable programming of processor U1. Test Pad T2also includes a VCC line pad that is connectable with the VCC Pin 1 ofprocessor U1. The Test pad T2 also includes a ground line pad GNDconnectable to the ground Pin 20 of the processor U1.

Pin 9 of processor U1 provides a SIGNAL line that is connected with thereceiver stimulus actuator circuitry through resistor R16 to the gate ofa MOSFET switch transistor Q1. The gate of transistor Q1 is alsoconnected to ground through resistor R15. The source of transistor Q1 isconnected to ground. The drain of transistor Q1 is connected to theelectrical trace 833 around the periphery printed circuit board, PCPboard, and then with resistor R14 to the 5V source. As such, the SIGNALline at Pin 9 from the processor U1 is connected to the receiverstimulus actuator circuitry 830. In this regard, the processor U1 cancause the SIGNAL line to turn switching transistor Q1 on and off in aselected pattern to generate a particular actuating signal at the trace833 in an attempt to cause the animal receiver connected in the cradleto generate an electrical shock across Pad A and Pad B as shown in FIG.6. If a shock is generated in response to the activation signalgenerated in response to the SIGNAL LINE, the stimulus detectioncircuitry 650 shown in FIG. 6 will function to produce signal at theSHOCK line which is supplied to Pin 6 of the processor U1 so that theprocessor can monitor and verify if the animal collar procedures a shockin response to a particular actuation signal. For this purpose, Pin 6 ofU1 is connected to the SHOCK line of the stimulus detector circuitry 650shown in FIG. 6.

Pin 10 of the processor U1 is connected to the CHARGE line of the chargecontrol circuit 700 as shown in FIG. 7 and functions as an output to theswitch circuitry 730 to cause switching transistor Q5 to turn on and offso that the 5V source can be switchably connected with Pad C so thatcharging current can be supplied to the animal receiver through Pad C.The CHARGE pin of processor U1 may also function as an input to monitorthe output of the current monitor circuitry 720 to monitor charging ofthe animal receiver after charge initiation has commenced so that whenthe battery of the animal receiver no longer take a charge, or asufficient charge, the reduction in charge current to the animalreceiver is detected by the voltage drop across resistor R8 so that theprocessor U1 can then terminate the charging process and turn offswitching transistor Q5 to disconnect the 5V source from Pad C.

Referring to FIG. 6, the charger 100 includes animal receiver stimuluscontact pads Pad A and Pad B for electrical connection with the externalcontacts 110 and 120 on the external housing of the charger toelectrically connect with the stimulus probes of an animal receivercollar. Insertion of an animal receiver into the cradle enables thecontact probes of the animal receiver to make electrical contact withexternal contacts 110 and 120 so that electrical connection is made fromPad A through the secondary coil of the shock coil of the animalreceiver to Pad B which in turn is connected to ground. The charger 100also includes a voltage supply switch circuit, generally designated 600,which functions to switch the 5V source on and off to selectively supplya supply voltage VCC to the operational circuitry of the device. Ingeneral, when the impedance of the secondary coil of the animal receiverpulse transformer is electrically connected at Pads A and B, biascurrent from the base of switching transistor Q3 can flow through Pad A,then through the secondary coil, then to Pad B and then to ground, thusturning on switching transistor Q3 which in turn subsequently turns onswitching transistor Q2 which in turn causes the 5V source to supply thesupply voltage VCC at line VCC to the charger circuitry. The collectorof transistor Q2 is connected to the VCC output through Resistor R9. Acapacitor C4 is connected from the VCC output to ground. The emitter oftransistor Q2 is connected to the 5V source. Resistor R1 is connectedbetween the 5V source and the base of transistor Q2. A capacitor C1 isconnected between the base of transistor Q2 and ground. Resistor R1 andcapacitor C1 provide an RC delay time constant into the base ofswitching transistor Q2 which permits Q2 to remain turned on duringsituations in which switching transistor Q3 is temporarily switched onand off when the animal receiver connected between Pad A and Pad Bgenerates a correction shock. Resistor R2 is connected between ResistorR1 and the base of switching transistor Q3. The emitter of Q3 isconnected between Resistor R1 and capacitor C1 to the base of Q2. Thecollector of Q3 is connected through Resistor R34 to ground. The base ofQ2 is connected to a Resistor R3 and Resistor R4 to Pad A. A clampingcircuit includes diode D5 connected between Resistor R3 and R4 and the5V source and diode D6 connected between Resistors R3 and R4 and groundto provide a clamping function to protect switching transistor Q3 fromthe high voltages generated by the receiver collar during shockgeneration.

Referring again to FIG. 6, the charger 100 includes stimulus detectioncircuitry 650 connected with Pad A and arranged to produce output at theSHOCK line as discussed, the animal receiver collar may generate a shockin response to a SIGNAL line signal from the controller circuitry 800.More generally, in order to detect the generation of a stimulus by theanimal receiver in response to a signal line signal, the charger 100includes stimulus detection circuitry 650 shown in FIG. 6, whichfunctions to detect the generation of a stimulus by the animal receiveracross Pads A and B. The stimulus detection circuitry 650 may preferablyfunction to detect the generation of an electrical shock although suchcircuitry 650 could also be used or modified to detect other stimulussignals such as audible signalling and/or vibrational signalling. Whenused as for shock detection, as shown in FIG. 6, the stimulus detectioncircuitry 650 is connected with Pad A through the network of resistorR5, capacitor C3, and resistor R6 to ground. Resistors R5 and R6function to present a load simulating the load of flesh, such as dogflesh, and also function to divide the amplitude of the pulses by aselected factor such as a factor of about 100. Capacitor C3 is providedto prevent a DC path to ground to facilitate operation of the power turnon circuitry provided by the supply voltage switch circuitry 600. Aconnection is provided between capacitor C3 and resistor R6. From thisconnection, a diode D2 is connected with resistor R10 which is in turnconnected with resistor R7 to ground, also with a capacitor C10 toground, and with an input Pin 7 of comparator U2-1 to provide anenvelope detector with a relatively lengthy decay time constant foraveraging purposes, such as approximately three seconds. The signal fromthe envelop detector is supplied to the input Pin 7 of comparator U2-1which functions to compare the average voltage produced while thereceiver is generating a shock to a known reference value supplied tothe other input Pin 6 of the comparator U2-1. The output of comparatorU2-1 goes high once sufficient average shock amplitude has been detectedso that comparator U2-1 produces a high SHOCK signal at the SHOCK linefor supply to the controller. A clamping circuit provided by Diodes D3and D4 is provided at the input Pin 7 of the comparator U2-1 in order toclamp the magnitude of voltage supplied from the envelope detector tothe input Pin 7. For example, the clamping diodes may clamp the voltagefrom a range of approximately −0.7 to +5.7 V for supply to the input ofthe comparator U2-1. A pull-up Resistor R13 is connected at the outputof the comparator U2-1 and with VCC so that a high output may besupplied by the comparator. The reference input at Pin 6 of thecomparator U2-1 is connected to a series resistor network R11 and R12connected between the 5V source and ground to provide a voltage dividerto supply a desired voltage to the reference input of the comparatorU2-1. A capacitor C6 is connected between input Pin 6 of comparator U2-1and ground as well as between resistors R11 and R12 and ground to smooththe reference input voltage. Comparator U2-1 may be supplied as aportion of a chip U2 that may function to supply a set of comparatorssuch as a set of 4 comparators U2-1, U2-2, U2-3 and U2-4. If certaincomparators are not needed, the inputs of such comparators may be tiedto ground. For example, as shown in FIG. 8, unused comparators 893 suchas comparators U2-3 and U2-4, have inputs connected to ground.

Referring to FIG. 6, when the collar is removed from the cradle of thecharger 100 so as to disconnect the secondary coil of the animalreceiver from Pad A and B, switching transistor Q3 of the supply voltageswitch circuit 600 will be turned off which will in turn cause switchingtransistor Q2 to turn off which will disconnect the 5V source from theVCC supply line so as to power down the unit.

Referring now to FIG. 7, the charger 100 includes charge controlcircuitry 700 which functions to supply and control the supply of chargecurrent to the battery of the animal receiver. In this regard, thecharge control circuit 700 is connected to the 5V source so that acharge current may be switchably supplied through switching circuitry720 by switch transistor Q5 to Pad C which is in turn connected to theexternal charge contact 160 on the charge unit 100 for connection with amating charging contact on the animal receiver when the animal receiveris placed within the charger cradle. The charge control circuitry 700also includes charge current monitor circuitry 720 that monitor the flowof charge current through resistor R8 and produces output CHARGE signalon the CHARGE line that is supplied to the CHARGE pin 10 of thecontroller U1 of controller circuit 800. In a selected configuration thecharge pin 10 of the controller may optionally have a dual function bothas an input to the controller U1 to monitor the output of the chargecurrent monitor circuitry 720 to indicate when charge of the battery ofthe animal receiver is complete and also as an output from thecontroller U1 which is supplied as an input on the CHARGE LINE to theswitch circuitry 730 in order to switch the charging line from the 5Vsource to Pad C on in order to commence the charge cycle or off to stopthe charge cycle. In this regard, the charge pin 10 of controller U1 isnormally configured as an input so as to monitor the status of thecharge, but in order to turn the charger on, the charge pin 10 ofcontroller U1 must temporarily be configured as an output directed to alow state to turn the charging circuitry on. More specifically,directing the CHARGE pin 10 to a low state functions to supply an inputto switch circuitry 730 to turn on MOSFET switch transistor Q6 which inturn turns on MOSFET switch transistor Q4 which in turn turns on MOSFETswitch transistor Q5 which thereby connects the 5V source with Pad Cwhich thereby supplies charging current to the animal receiver throughPad C. As shown in FIG. 7, the 5V source is connected with the source ofa P-channel MOSFET switch transistor Q5 through current sense resistorR8. The drain of transistor Q5 is connected with Pad C and is alsoconnected to ground through diode D10 and through capacitor C2. Thesource of transistor Q5 is also connected through resistor R17 to thedrain of the transistor Q5. The gate of transistor Q5 is also connectedthrough resistor R27 to the drain of N-channel MOSFET switchingtransistor Q4. The source of transistor Q4 is connected to ground. Thegate of transistor Q4 is connected through resistor R26 to ground and tothe drain of a P-channel MOSFET transistor switch Q6. The source oftransistor Q6 is connected to voltage supply VCC and to the gate of thetransistor Q6 through resistor R28. The gate of transistor Q6 is alsoconnected with the CHARGE line to receive an output from CHARGE pin 10of the controller U1.

Now turning to the charge current monitoring circuitry 720, currentsense Resistor R8 is connected across the input terminals of a high-sidecurrent monitor in the form of chip U3 that functions to supply aproportional current at its output relative to the voltage drop suppliedacross its input terminals as detected across resistor R8. The output ofthe high-side current monitor U3 is connected through resistor R20 toone of the input pins 4 of comparator U2-2. Resistor R19 is connectedbetween resistor R20 and the output of current monitor U3 to ground.Resistor R19 functions to produce a desired voltage in proportion to theoutput current from the high-side current monitor U3 for supply throughResistor R20 to the input pin 4 of comparator U2-2. Capacitor C5 isconnected through resistor R20 and input pin 4 to ground and functionsto smooth the voltage supplied to the input pin 4 of comparator U2-2. Areference voltage is supplied to the other input pin 5 of comparatorU2-2. In this regard the reference input pin 5 of comparator U2-2 isconnected at intermediate resistors R25 and R23 which provide a voltagedivider that is connected between voltage supply VCC and ground. Theinput pin 5 is also connected to the output pin 2 of comparator U2-2through resistor R24. A voltage VCC is connected through resistor R21 tothe output of comparator U2-2 so that R21 functions as a pull upresistor. The output pin 2 of the comparator U2-2 is also connected withthe CHARGE line through resistor R22 which functions to provide someisolation between the output of the comparator U2-2 and the CHARGE pin 2of the controller U1.

In operation, when the charging current passing through resistor R8 toPad C is sufficiently high, the output pin 2 of comparator U2-2 will goto a low state, thereby supplying a low signal at the CHARGE line forsupply to the input of the network of switching transistors Q6, Q4 andQ5 to latch the charger on so that charging current will continue to besupplied from the 5V source through resistor R8 through switchingtransistor Q5 to Pad C. The output from comparator U2-2 at this pointalso enables the processor to return to an input configuration so thatthe CHARGE pin 10 of the controller U1 then monitors the output state ofthe comparator U2-2. When the charge current through resistor R8 dropsto below a preset level, the output of comparator U2-2 will go to a highstate to indicate charge is complete. This will in turn enable thenetwork of switching transistors Q6, Q4 and Q5 to be turned off todisconnect the 5V source from Pad C to discontinue the supply ofcharging current to the animal receiver.

A table of the circuit components identified in FIGS. 6-8 is set forthin Table 1

Part Description Part Value Device C1 100 μF, 6.3 V CAP_A C2 0.1 μFC-USC0805K C3 0.1 μF, 12 × 6.3 V CAP_12X6.3_FILM C4 22 μF C-USC0805K C50.1 μF C-USC0805K C6 0.1 μF C-USC0805K C10 10 μF, 25 V CPOL-USB D2BAV116W_SOD-123 D3 BAV116W_SOD-123 D4 BAV116W_SOD-123 D5 BAV116W_SOD-123D6 BAV116W_SOD-123 D10 BAV116W_SOD-123 D11 LED_GREEN_0805 D12LED_RED_0805 J1 CONN_JACK_PLUG P1A PAD_CRADLE_.035 P2A PAD_CRADLE_.035P3B PAD_CRADLE_.035 P4B PAD_CRADLE_.035 P_C PAD_CRADLE_.33X.25 Q1FDN335N Q2 MMBT3906LT1SMD Q3 MMBT3906LT1SMD Q4 FDN335N Q5 FDC365P_SSOT6LQ6 FDC365P_SSOT6L Q7 FDN335N Q8 FDN335N R1  100 k R-US_R0805 R2  100 kR-US_R0805 R3  2.5 k R-US_R0805 R4   47 k R-US_R0805 R5   10 kR-US_0207/10 R6 100 R-US_R0805 R7  330 k R-US_R0805 R8 0.5 R-US_R0805 R910 R-US_R0805 R10 140 R-US_R0805 R11  100 k R-US_R0805 R12 383R-US_R0805 R13   10 k R-US_R0805 R14 100 R-US_R0805 R15  330 kR-US_R0805 R16 140 R-US_R0805 R17  100 k R-US_R0805 R18 140 R-US_R0805R19   2.5 k R-US_R0805 R20  100 k R-US_R0805 R21   10 k R-US_R0805 R22 2.5 k R-US_R0805 R23 13.3 k R-US_R0805 R24  100 k R-US_R0805 R25 383R-US_R0805 R26   10 k R-US_R0805 R27 140 R-US_R0805 R28   10 kR-US_R0805 R29 140 R-US_R0805 R30  330 k R-US_R0805 R31  330 kR-US_R0805 R32 140 R-US_R0805 R33 140 R-US_R0805 R34  2.5 k R-US_R0805R35 13.3 k R-US_R0805 T1 TESTPADS_.075X0.075X0.015 T2 TESTPAD038 U1PIC16F677-I/SS_20SSOP U2 LM339_SOIC14 U3 ZXCT1010_SOT23-5

The present invention may further include methods of charging andtesting an animal stimulus receiver (e.g., animal stimulus receiver 200)with a cradle 100 having stimulus detection circuitry and chargingcircuitry. As illustrated in FIG. 9, the present invention describes amethod 900.

At the outset, an animal stimulus receiver to be charged and tested maybe engaged with a charging cradle of the invention (905). Afterengagement, the charging cradle will activate, thereby activating boththe charging circuitry and the stimulus detection circuitry. Afteractivation, the cradle may produce an actuation signal selected to causethe animal stimulus receiver, and more particularly the stimulusgenerator of the receiver, to generate a selected stimulus (910).

An actuation signal may be selected, and provided to the animal stimulusreceiver, to produce at least one of a shock stimulus, a vibrationalstimulus, and auditory stimulus. Thus, a specific signal may be selectedto produce a corresponding stimulus. Actuation signals of the inventionmay include radio wave and electromagnetic signals, which may include AMsignals. Moreover, such signals may have wave forms that are, forexample, rectangular or square shape. The intermittent, or pulsed,signals may also be referred to as having OOK signature, i.e., “on/offkeying.” Actuation signals of the invention may include an actuationamplitude (i.e., carrier frequency) and an actuation signature. Incertain embodiments, the actuation amplitude may be from 1 to 100 kHz.Specifically, the actuation amplitude may be from 5 to 50 kHz. Morespecifically, the actuation amplitude may be from 5 to 20 kHz. Incertain other embodiments, the actuation amplitude may include 7.5,10.7, or 15 kHz. The actuation signature may be defined as the OOKsignature or periods of “on” time (time period of frequencytransmission) versus periods of “off” time (time period withoutfrequency transmission). For example, an actuation signal of theinvention may have an actuation amplitude of 10 kHz having a 50% dutycycle with an “on” time of 10 ms and an “off” time of 10 ms.Specifically, the actuation signature of the invention may have an “on”time of 0.1 ms to 100 ms and, more specifically, an “on” time of 1 ms to50 ms. Conversely, the actuation signature of the invention may have an“off” time of 0.1 ms to 100 ms and, more specifically, an “off” time of1 ms to 50 ms. The “on” time and “off” time may be the same ordifferent. Moreover, the pulses of the signature (i.e., periods of “on”time) may be repeated or, in other embodiments, the signature mayinclude multiple pulses of varying “on” time with varying “off” timebetween such pulses.

In certain actuation signatures of the invention, an actuation amplitudemay (1) be turned on for 5.5 ms, then turned off for a duration of 5.5ms, with the pattern repeating; (2) be turned on for 15 ms, then turnedoff for a duration of 15 ms, with the pattern repeating; (3) be turnedon for 2.4 ms, then turned off for 1 ms, then turned on for 1 ms, thenturned off for 3 ms, then turned on again for 1 ms, then turned off for24 ms, with the pattern repeating; or (4) be turned on for 1.6 ms, thenturned off for 0.8 ms, then turned on again for 0.8 ms, then turned offfor 2.2 ms, then turned on again for 0.8 ms, then turned off for 24 ms,with the pattern repeating.

With regard to the actuation signatures (1) and (2), the actuationamplitude may preferably be selected from 7.5, 10.7, or 15 kHz. Foractuation signature (3), the actuation amplitude may preferably be 7.5kHz. For actuation signature (4), the actuation amplitude may preferablybe 10.7 kHz. As set forth herein, the animal stimulus receiver may beprogrammed to provide a specific stimulus (e.g., shock, auditory,vibrational) upon the reception of a selected actuation signal.Additionally, actuation signals (1)-(4) may produce a shock stimulus atthe animal control receiver.

After the production of an actuation signal, the stimulus circuitry ofthe invention will then detect whether a selected stimulus has beenproduced (915). If the selected stimulus is not detected, it is thendetermined if the actuation signal may be modified to provide anactuation signal that was not yet produced to determine if a differentactuation signal is necessary to produce a selected stimulus at theanimal control receiver (925). If the actuation signal can be modifiedto provide an actuation signal not yet produced, the actuation signal ismodified and then produced (steps 930 and 910).

Where the selected stimulus is detected in step 915, or the actuationsignal may not be modified (step 925), a preliminary charge is providedto one or more batteries of the animal stimulus receiver (920). Thepreliminary charge (i.e., voltage) may be applied for a period of about0.1 to 100 minutes, but preferably about 1 minute. After a preliminarycharge, the animal stimulus receiver is tested to determine if it isfully charged (935).

If the animal stimulus receiver is fully charged, charging is halted(960) and the charging circuitry or control processor is queried todetermine if the animal stimulus receiver has successfully produced aselected stimulus in response to an actuation signal (965). If so, anoutput indicator is set to indicate to a user that the animal stimulusreceiver is operational (a “passing” status) and ready for use (970).However, if the animal stimulus receiver has not yet generated aselected stimulus, even after being fully charged, the animal stimulusreceiver is retested and actuation signals are again produced (steps 975and 910).

After step 935, if the animal stimulus receiver is not fully charged,the animal stimulus receiver is charged for an interval selected tofully charge the animal stimulus receiver (940). Specifically, one ormore batteries of the animal stimulus receiver may be charged for aninterval of about 1 minute to 4 hours, but in certain aspects about 2.5hours.

After step 940, the animal stimulus receiver is again tested todetermine if it is fully charged (945). If the animal stimulus receiveris fully charged, charging is halted at step 960, discussed above.However, if the animal stimulus receiver is not fully charged, chargingis halted (950) and an output indicator is set to indicate to a userthat the animal stimulus receiver is not operational (a “failing”status) and not ready for use (955).

Additionally, where the animal stimulus receiver is subjected toretesting at step 975 for failing to produce a selected stimulus, theanimal stimulus receiver may be subsequently retested multiple times.However, in certain aspects of the methods of the invention, the animalstimulus receiver may be retested once and, if again failing to producea selected stimulus at step 925, the method will proceed to step 955 andan output indicator will be set to indicate a failing status.

An exemplary method of the invention, which utilizes actuation signalshaving actuation amplitudes of 7.5 kHz, 10.7 kHz, and 15 kHz withactuation signals that include signatures (1)-(4), is provided in FIGS.10A-10B. Moreover, the exemplary method of FIGS. 10A-10B may be employedwith cradle 100.

While certain embodiments of the present invention have been describedand/or exemplified above, various other embodiments will be apparent tothose skilled in the art from the foregoing disclosure. The presentinvention is, therefore, not limited to the particular embodimentsdescribed and/or exemplified, but is capable of considerable variationand modification without departure from the scope and spirit of theappended claims.

The methods of the invention can be embodied as a computer implementedprocess or processes and/or apparatus for performing suchcomputer-implemented process or processes, and can also be embodied inthe form of a tangible storage medium containing a computer program orother machine-readable instructions (herein “computer program”), whereinwhen the computer program is loaded into a computer or other processor(herein “computer”) and/or is executed by the computer, the computerbecomes an apparatus for practicing the process or processes. Storagemedia for containing such computer program include, for example, floppydisks and diskettes, compact disk (CD)-ROMs (whether or not writeable),DVD digital disks, RAM and ROM memories, computer hard drives andback-up drives, external hard drives, “thumb” drives, and any otherstorage medium readable by a computer. The process or processes can alsobe embodied in the form of a computer program, for example, whetherstored in a storage medium or transmitted over a transmission mediumsuch as electrical conductors, fiber optics or other light conductors,or by electromagnetic radiation, wherein when the computer program isloaded into a computer and/or is executed by the computer, the computerbecomes an apparatus for practicing the process or processes. Theprocess or processes may be implemented on a general purposemicroprocessor or on a digital processor specifically configured topractice the process or processes. When a general-purpose microprocessoris employed, the computer program code configures the circuitry of themicroprocessor to create specific logic circuit arrangements. Storagemedium readable by a computer includes medium being readable by acomputer per se or by another machine that reads the computerinstructions for providing those instructions to a computer forcontrolling its operation. Such machines may include, for example, apunched card reader, a magnetic tape reader, a magnetic card reader, amemory card reader, an optical scanner, as well as machines for readingthe storage media mentioned above.

Furthermore, the transitional terms “comprising”, “consistingessentially of” and “consisting of”, when used in the appended claims,in original and amended form, define the claim scope with respect towhat unrecited additional claim elements or steps, if any, are excludedfrom the scope of the claim(s). The term “comprising” is intended to beinclusive or open-ended and does not exclude any additional, unrecitedelement, method, step or material. The term “consisting of” excludes anyelement, step or material other than those specified in the claim and,in the latter instance, impurities ordinary associated with thespecified material(s). The term “consisting essentially of” limits thescope of a claim to the specified elements, steps or material(s) andthose that do not materially affect the basic and novelcharacteristic(s) of the claimed invention. All devices and methodsdescribed herein that embody the present invention can, in alternateembodiments, be more specifically defined by any of the transitionalterms “comprising,” “consisting essentially of,” and “consisting of.”

What is claimed is:
 1. A charger for charging and testing an animalstimulus receiver, wherein the animal stimulus receiver comprises astimulus generator adapted to deliver a stimulus to an animal, thecharger comprising: a. a receptacle cradle for removably receiving theanimal stimulus receiver in position for enabling a rechargeable batteryof the animal stimulus receiver to be charged while the animal stimulusreceiver is positioned in the cradle; b. shock stimulus actuatorcircuitry to provide an actuator signal to the animal stimulus receiverto prompt the animal stimulus receiver to produce an animal shockstimulus output while the animal stimulus receiver is positioned in thecradle; and c. shock detection circuitry configured to receive theanimal shock stimulus produced from the animal stimulus receiver inresponse to the actuator signal to diagnostically detect the animalshock stimulus from the animal stimulus receiver while the animalstimulus receiver is in the cradle.
 2. The charger of claim 1 whereinthe shock stimulus actuator produces a plurality of different actuatorsignals to prompt the animal stimulus receiver to produce an animalshock stimulus.
 3. The charger of claim 1, wherein the shock stimulusactuator produces of series of different actuator signals to prompt theanimal stimulus to produce an animal shock stimulus.
 4. The charger ofclaim 1, including an output to provide an output indication when aselected animal shock stimulus has been diagnostically detected.
 5. Thecharger of claim 1, including an output to provide an output indicatorwhen a selected animal shock stimulus has failed to be diagnosticallydetected.